SU1502869A2 - Piston having forced circulation of liquid - Google Patents

Abstract

The invention improves reliability by creating a guaranteed oil wedge on the working surfaces of the piston pin bearings. The piston is provided with a freely moving cylindrical element 1 installed in the accumulating chamber 2. The outlet 3 of the channel 4 is located from the lower end of the accumulating chamber 2 at a height greater than the height of the freely moving element 1. The accumulating chamber has a groove 5 located on its inner surface from the lower end to the outlet 3 of the channel 4. The freely moving element 1 is made of a material whose density exceeds the density of the oil. The piston can be provided with a ring 6, fixed in the grooves 7, made on the inner surface of the piston skirt, while the plug 9 is placed in the ring 6. 1 Cp f-ly. 4 il.

Description

b

cl

about go

00 od

1H

315028

2. The output unlocked 3 of the channel 4 is located from the lower end of the accumulating chamber 2 at a height exceeding 1 the height of the free bottom element 1. The accumulating chamber has a groove 5 located on its inner surface from the lower end to the outlet 3 of channel 4 . Free movement of the element

1 vpih gnI it material, the density of which The piston can be provided with a ring 6, fixed in the grooves 7, made on the inside) P1e1 1 surface of the piston skirt, gy1) and this plug 9 dismounts the ring h. 1 hp f-ly, 4 ill.

The invention relates to mechanical engineering, namely to engine building, and is an improvement of the invention according to the authors. St. 1002638.

The purpose of the invention is to increase reliability by creating a guaranteed oil wedge on the working surfaces of the piston pin bearings.

FIG. 1 shows the piston, a general view, with a cut; in fig. 2 — accumulator chamber with a freely moving element when the piston moves with positive acceleration; in fig. 3 - the same, with negative HLM acceleration; in fig. 4 - the same, when moving to NMT with positive acceleration.

The piston additionally contains a C1-free moving element 1 1 of the cylindrical shape, mounted in the accumulating chamber 2. The outlet 3 of the channel 4 is located from the lower end of the accumulating chamber 2 on an elevation exceeding the height of the free moving element 1, which may be in particular, 0.6 -: 0.7 of its dia {etra. The accumulator measure 2 is made with a groove 5 located on its inner surface from the lower end to the outlet opening 3 of the channel 4. The freely moving element 1 is made of a material that better than the density of the oil. The piston is additionally provided with a ring 6 fixed in the grooves made on the inner surface 8 of the piston skirt, while the plug 9 is placed in the ring 6.

The piston works as follows: When the piston moves to the upper Mep point with a positive acceleration mark, the oil, the booster; n1 11 1;

0

0

,

5 0 5 Q

ij

above a freely moving element 1. When the acceleration sign changes to a negative oil enclosed in the volume of the accumulating chamber 2 together with element 1, it fills the outlet opening 1 1.

When the piston moves to the bottom dead center with a positive acceleration sign, the oil under the action of the inertial force of the element 1 under pressure flows from the volume of the accumulating chamber 2 to the lubrication of the working surface of the bearings. When the sign of the acceleration changes to reverse, element 1 returns to its original position.

Claims (1)

1. Piston with compulsory circulating fluid and coolant according to ed. St. To 1002638, different from the fact that, in order to increase reliability by creating a guaranteed oil wedge on the working surfaces of the piston pin bearings, the piston is provided with a freely moving cylindrical element installed in the accumulating chamber, from the lower end of the accumulating chamber at a height exceeding the height of the freely moving element bore, and the accumulating chamber is made with a groove located vertically on its inner surface from the lower end to the outlet of the channel, and the freely moving element is made of a material whose density exceeds the density of the oil . 2, The piston in accordance with claim 1, in which it is additionally provided with a ring, is fixed in kinaavka made on the inner surface of the piston skirt, and the plug is placed in the ring. . Fig.Z Editor L. Zaitseva Compiled by V. Winter Tekhred L. Oliinyk Order 5067/47 Circulation 482 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., A / 5 Phie. Phie. Corrector I. Muska Subscription